This article examines the change in teachers' attitudes and instruction following computerization of their schools. Parameters chosen to assure the success of the study were: teachers' training courses, establishment of teachers' teams, teachers' expectations and willingness, and teachers' use of the computer in the school. The study took place in Israeli schools using the following tools: interviews, questionnaires, observations, case studies, and focus groups. The groups examined were teachers and students. The results showed a significant change in the teachers' attitude and instruction following computerization. Those who took training courses on computers, used computer tools as aids, and made greater use of software, had a greater willingness to employ the computer. Yet the teachers were not yet open to changing their methods by using the computer as a teaching tool and still preferred traditional frontal teaching. They stated that they did not have expectations for changing the learning process significantly as a result of computerization.